Machine for separating dust from air



(No Model.)

' 2 Sheets-Sheet; 1. E. KUEHNE. MACHINE FOR SEPARATING DUST PROM AIR. No. 309,965. Patented Dec, 80, 1884.

WITNESSES: INVEjTOR ATTORNEY (No Model.) 2 Sheets-Sheet 2.

E. KUEHNE. MACHINE FOR SEP ARATING DUST FROM AIR.

7 No. 309,965. Y Patented Dec. 30, 1884.

WITNESSES INVENTOR @WMQ I v &M ALJW 5 @012 I y/Wm;

ATTORNEY UNrrEn STATES PATENT @EEicE.

ERNST KUEHNE, OF CHICAGO, ILLINOIS.

iViACl-HNE FOR SEPARATiNG DUST FROM AER.

SPECIFICATION forming part of Letters Patent No, 309,965, dated December 30, 1884.

Application filed July JG. 1884.

T aZZ whom it may concern.-

Be it known that I, ERNST Kent-inn, a citizen of the United States, and a resident of Chicago, in the county of Cool; and State of Illinois, have invented new and useful Improveinents in Machines for Separating Dust .i'rom Air, of which the following is a specifi cation, reference being had to the accompanying drawings, illustrating the invention.

It has been the custom heretofore to force air containing dust against a fabric which will catch the dust but let the air pass through, and I have heretofore invented and patented a double conveyor having two separate passages through it, one for the entrance of the dust and air and one for the collection of the dust from the air. In this the conveyer-case was stationary and the conveyor a rotating one, and the wind or current of air traveled in an opposite direction to that in which the separated dust moved. The present invention differs from those mentioned, and all others, in that the exterior case rotates on a stationary conveyer and carries the dust into an upper chamber, where it is swept off by a rotating brush, from which it falls into a conveyer, by which it is discharged from the machine.

In the drawings, Figure 1, Sheet 1, is a sec tional elevation of my improved machine, taken longitudinally on line an m, Fig. Fig. 2, a horizontal section of Fig. 1, looking down from line so 00; Fig. 3, sheet 2, an end view of the receiving end of the machine; Fig. 4, a perspective representation of the machine; and Fig. 5 a transverse section on dotted lines z z, Figs. 1 and 2-. Figs. 6 and 7 show details of construction hereinafter referred to.

A represents an outer revolving case, the frame of which consists of iron rings 0 O, which are provided with lugs ff, so as to be held together in circular form, when composed of sections, for the convenience of being placed on the heads of the inner portions of the separator. The insides of the rings C G are provided with grooves g, of annular form, to run on annular tongues lb of the stationary heads E, whereby the exterior case is held in position to be rotated. Attached to these rings are segments a and ribs 12 by screws or bolts, as is customary in the construction of analo- (Xo model.)

gous mechanisms. The segments 0 are of wood, and fit between the ribs 1) and against the inner faces of the rings 0 O, to which they are bolted. The under edges of these segments support the ends of fabric a, the latter being fastened thereto by tacks or other suitable means. The ribs 1) are suiiiciently numerous to form a support for a strong fabric, a a, preferably carpeting, which is tacked to their inner edges and to the segments 0, or otherwise secnrel y fastened. The heads of the inner portion of the separator consist each of a segmental part, H, and a circular part, E, the latter parts being provided with brackets c, which support an inner metal partition, D, surrounding which, and between it and the plate F and the case A, is the conveyer-chamber G. The end I of the partition D is closed, whereby the air and dust coming in through the pipe B must pass through the conveyer chamber G.

Attached to the partition D is a stationary spiral conveyor, J, which is made to fit the circle of the case A up to where it reaches the plate F, at which place it is flat and fits the plate closely. By means of this plate F a dead-air chamber, K, "is formed the entire length of the case A, as shown more clearly in Figs. 1 and 5, and in this chamber is placeda conveyer-trough, L, which not only supports a dust-conveyer, M, but extends up, so that leather packings on its upper edges will come in contact with the fabric a. Placed in the upper portion of this trough is a spiral dustsweeper, N, which removes the dust or flour from the fabric a. A scraper, S, Fig. 5, of the length of the brush N, being attached to the inside of the trough L, cleans the brush of dust, which falls into the conveyor-trough L, from which it is moved by conveyor M from the machine through an outlet, 1.

The means adapted for driving the separator consists of a pulley, R, on the shaft of the conveyer M,and a cog-gear, T, on the same shaft which drives a gear, WV, attached to the shaft of brush N, and gives it the proper motion.

To give a proper direction to the case A, an

intermediate gear, V, is made to mesh into cog-gear on the edge of ring 0, and consequently rotates the case A slowly. In this regard it is proper to state thatarotation of the case once in five minutes will fully answer the purpose where the machines are about three feet in diameter, the object being'to carry the dust up to brush N, and,inasmuch as the quantity of dust separated from the air in a given time is comparatively small, a slow motion of the case A is best, because it allows the dust to adhere to the fabric a and be carried to the brush, giving the latter ample time to remove it.

In practice the machine may be supported by legs X, attached to the heads H E, or other wise, as most convenient, and the inlet-pipe B may be connected with a blast-pipe, which conducts the air containing dust into the machine. The dust passing through the chambear G is directed onto the fabric a, and is removed therefrom, as above stated. I do not make the case A cylindrical, except for convenience of construction, inasmuch as any form of case which can be rotated round a stationary conveyer, J, a rotating conveyer, and a rotating brush would come within the scope of my invention, and the combining of the gear which rotates the case A with the gear which drives the rotary conveyer and brush is not a necessary feature, for separate driving attachments of any of the well-known gearings will operate said parts as well.

It is proper to state that the dust forced into the blast-chamber G comes in contact with the conveyer J, and is deflected onto the fabric a, to which it adheres, and by which it is carried to the brush N.

I claim as new and desire to secure by Letters Patent 1. In machines for separating dust from air, the exterior rotating case, A, constructed to hold dust brought in contact with it, in combination with a stationary conveyer, J, blastchamber G, dead-air chamber K, brush N, and rotary conveyer M, as specified.

2. The combination of the rotating case A, blast-cl1amber G, and the conveyer J, for separating the dust from air, with the chamber K, the brush N, trough L, and conveyer M, for removing the dust from the machine, substantially as specified.

3. The conveyer J, combined with an exterior rotating case retaining the dust deflected onto it, and the brush N, as and for the purpose hercinbefore set forth.

ERNST KUEHNE.

Witnesses:

G. L. GHAPIN, J OI-IN H. BROWN. 

